Pope Benedict IV (Latin: Benedictus IV; c. 840 – 30 July 903[2]) was the bishop of Rome and ruler of the Papal States from 1 February 900 to his death.[3] The tenth-century historian Flodoard, who nicknamed him "the Great", commended his noble birth and public generosity.
Ottorino Bertolini: Benedetto IV. In: Massimo Bray (ed.): Enciclopedia dei Papi. Volume 2: Niccolò I, santo, Sisto IV. Istituto della Enciclopedia Italiana, Rome 2000, pp. 54–58 (treccani.it)